Binder knotter



Nov. 24, 1925. 1,562,529

' E. A. TRUM BO w BINDER KNOTTER Filed April 2, 1925 A TTORNEY Patented Nov. 24, 1925.

PATENT OFFICE."

ELLIS A. TRUMBO, OF GREENVIEW, ILLINOIS.

BINDER KNOT'IER.

Application filed April 2, 1925. Serial No. 20,189.

1 all whom it may cancer m.

Be it known that ELLIS A. TRUMBO, a citizen of the United States, residing at Greenview, in the county of Menard and State of Illinois, has invented certain new and useful Improvements in Binder Knotters, of which the following is a specification.

This invention relates to binder knotters and consists in the novel features hereinafter 10 described and claimed.

An object of the invention is to provide a knotter especially adapted to be used for binding bundles of wheat, oats and the like when cutting the same in the harvest field 5 in an eflicient manner and eliminating the troublesome misses commonly experienced with knotters now generally employed, which misses are usually due to the fact that the grease or grains of wheat or the like have been able to collect on the extended channel of the bill under the oscillating tongue and preventing the tongue from normally contacting with the channel of the bill, thus causing the knotter at times to fail 5 to tie the knot, in which event the bundle of grain is kicked off of the rack, untied, finding its lodging on the ground in a scattered situation. This of course not only causes annoyance and a material loss of time for the harvesters at a busy time but also naturally results in a consequent loss of grain.

It is the prime object of my novel improvement in knotters resulting in the present invention to provide an ample and eflicient means for avoiding the accumulation of grain, dirt, grease and the like upon the inverted bill in the way of the normal free movement of the pivoted tongue thus resulting in complete failure to complete the knotting operation.

With this object in view the inverted bill of the knotter is provided with a lo11gitudi-' nal centrally disposed slot terminating near the extremities of the bill, and thus leaving only enough of the shallow channel at the tip of the bill to provide a practical working minimum of surface area at the forward end of the bill to serve as stop means for the 0 binding twine and the twine retaining knob of the tongue when in' its normal position where the knob of the tongue is adapted to be held down tightly against the forward tip which drawings like parts are designated by like reference characters throughout the several views:

Figure 1 is a side elevation of my improved binder knotter showing how the longitudinal centrally disposed slot of the bill has been extended forwardly toward the tip of the bill leavingonly a small portion of the originally extended shallow channel in the bill and that up near the tip of the bill, and

Figure 2 is a perspective view of a binder knotter embodying my improvements.

As illustrated in the accompanying drawing, the knotter comprises a supporting shaft 1 provided at its lower end with an integral curved bill 2 normally supported by the shaft. A tongue 3 is pivoted to the bill 2 on pivot pin 4: which is located directly under the shaft, where it extends horizontally through the base portion of the bill.

It is a well known fact to those skilled in the art to which this invention appertains that the knotter now in general use has a centrally disposed longitudinal slot extending only from the inner end of the bill to a point slightly beyond the bottom edge of the oscillating tongue and that the shallow channel of the bill extends from the tip of the latter to the outer end of the slot.

lVith this arrangement, a grain of wheat, oats or the like may easily become lodged upon the rearwardly extending channel or base of the bill and when thus lodged may not be easily dislodged by the tongue when the binder knotter is normally functioning in a tieing operation. This is likely to be especially true in the event that grease should accumulate at this point and thus tend to hold the grain where it is lodged.

My novel improvement on this knotter will be appreciated when it is observed that I remove the material in the base of the bill to a point forward indicated at 7, Figure 1, which results in the material elongation of the slot in the bill and provides the maximum practical clearance between the bottom edge of the tongue and the outer end of the slot thereby eliminating the cause oi grain becoming lodged beneath the tongue when in normal use.

And in making this improvement it will be noted that channel 10" extends back from the tip of the bill in the improved arrangement only far enough to provide a limiting stop-means for the retaining knob of the tongue and the binding twine adapted to be held down thereby during the knotting operation,

It will'therefore be seen'that. with this improvement resulting in a longer slot 12,

ample provision is made for the normal passage of grains of wheat, oats and the like, through the slot 12 and on, out of the way with no chance to get caught under tongue 3.

Roller 11 is adapted to receive the tension pressure normally controlling the movement of tongue 3 on pivot pin t while aperture 13 is adapted to accommodate the retaining pin for the vertical support of shaft 1 when the knotter is in normal operating position.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

A binder knotter of the character specified comprising a supporting shaft, an inverted curved bill at the lower end thereof provided with a centrally disposed uninterrupted longitudinal'slot, a pivot pin extending transversely of the slot through the bill, a tongue supported by and adapted to freely oscillate on said pivot pin within the slot, said tongue provided with an integral 'forward knob, and a roller on the rear end of said tongue, said longitudinal slot extending from the base of the bill to a point adjacent the outer extremity thereot, leaving a solid portion at the tip of the bill provided with a longitudinal channel, said channeled portion providing the minimum practical area for the knob of the tongue and the binding twine and said slot leaving the maximum practical clearance between the outer end thereof and the central bottom edge or the tongue.

In testimony whereof he afiixes his signature.

ELLIS A. TRUMBO. 

